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Precise M鰏sbauer milliprobe determination of ferric iron in rock-forming minerals and limitations of electron microprobe analysis
ferric iron rock-forming minerals electron microprobe analysis
2012/3/30
Forestimationsof P-T conditionsofigneousandmetamorphicrocks,Fe incoexisting
mineralsiseitherassumedtobezerooriscalculatedfromelectronmicroprobeanalyses
(EMPA)baseduponstoichiometryandchargebalance.G...
Calculated role of aluminum in the incorporation of ferric iron into magnesium silicate perovskite
Calculated role aluminum incorporation ferric iron magnesium silicate perovskite
2012/4/1
An atomistic computer simulation study was undertaken to address the role of Al in the substitution of ferric iron into magnesium silicate perovskite, MgSiO
3. Calculated substi-tution and vacancy en...
A convenient method for measuring ferric iron in magnesiowustite (MgO-Fe1-xO)
method measuring ferric iron magnesiowustite (MgO-Fe1-xO)
2012/4/1
We present a new oxybarometer for magnesiowu¨stite-bearing systems, which is easily applied using widely available techniques. A scale relating the proportion of Fe31[a5Fe31/(Fe311 Fe21)] to the posit...
Naturally occurring ferric iron sanidine from the Leucite Hills lamproite
ferric iron sanidine Leucite Hills lamproite
2012/4/5
Sanidine crystals precipitating from lamproitic magmascharacteristically contain ap-preciableamounts ofFeH. Sanidinegrainsfrom the LeuciteHillslamproites (Wyoming) have compositions in whichupto 70mol...
Role of Ferric Iron in the Oxidation of Hydrocortisone by Sepiolite and Palygorskite
Catalysis Electron spin resonance Hydrocortisone Iron Oxidation Palygorskite Sepiolite
2012/2/6
The role of adsorbed and structural Fe3+ in palygorskite and sepiolite with respect to the oxidation of hydrocortisone in aqueous suspension has been evaluated using electron spin resonance and UV-vis...
Deferration Effect on Structural Ferrous-Ferric Iron Ratio and CEC of Vermiculites and Soils
Deferration Structural Ferrous-Ferric Iron Ratio CEC Vermiculites Soils
2012/2/21
Deferration by reduction of free Fe2O3 with Na2S2O4 in the presence of Na citrate and NaHCO3 caused a change in valence state of 10 to 35 per cent of the total structural iron in micaceous vermiculite...